It appears the Patriots are focusing their efforts more on offense than on defense at this time.
Tom Brady and the New England Patriots offense should do ok - sure every new weapon helps, but I think their biggest weakness is their defense. I think they need some fresh new and nasty lineman and one or two dominate linebackers and in the secondary I think they are too small.
It's only my humble opinion, but If I'm Tom Brady and the Patriots offense, I'm tired of looking up at the score board and seeing 30-35 points that the OTHER team scored.
I mean especially with the master mind of Bilichick. They just have to have the personnel on defense to shut teams down. And if they do that quickly - you won't be able to stop Tom Brady and the Patriots from scoring.
Just my humble opinion.